Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 5808-22-0, Whether you call it Chromotropic Acid Disodium Salt or 4 -5-Dihydroxy-2 -7-naphthalenedisulfonic Acid Disodium Salt you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.